Have camera locked to an object

Ok so my question is, can anyone tell me how to constrain my cameras focus to an object? EXAMPLE

I have box in the center of the room…I want my camera to always be focused on that box on matter where the player moves in the game. The camera is always aiming at that object. How do I do that?

Always more than one way to skin a cat in this engine (why would people skin cats)…

How I went about it -